This mod adds a new map generation preset for bob's ores so you don't have to manually config every single one every time you want to start a new game. They're set to very low frequency, size large, richness high, with water, enemy bases and starting area at default. If you want to change the defaults, extract the mod to the mods directory and edit \presetsforbobsores_0.15.0\prototypes\bobs.lua.

I recommend using Resource Spawner Overhaul with this.